I'm looking to buy a steam cleaner and would love to hear some of your opinions. Is a bigger tank worth the higher price? I've never steam cleaned before and curious if it's more common to clean in intervals (making it easier to refill) or if it would be convenient to just get the bigger model so I don't have to fuss with refilling the water.

I'm in Europe and don't have too many options to choose from. I'm thinking about getting a Kärcher - if you have one, I'd love to hear from you. Thanks!